CooCox/CoX

What's CoX ?

CoX is the definition of a group of interface function. It defines the functional access functions of MCU's common peripherals, such as I2C, SPI, UART, etc.

CoX Peripheral Library can be divided into four parts:

• Common mandatory type interface.
• Common type of non-mandatory interface.
• MCU-specific interface.
• MCU register interface.

Features

• Free and Open source under BSD license
• Peripherals library with a unified standard interface, can be ported to other MCUs easily, Supports the platforms of ICCARM, ARMCC, GCC
• Full functions of the peripheral, CoX still provides a set of APIs for special MCU features
• Support interrupt, CoX extracts a set of interrupt events
• A lot of reused drivers
• Extensive documentation generated using doxygen standard
• Standard definition of the API reference for almost all the Cortex-M0/M3 MCU manuals
• Add a new innovative element, such as the short pin (PA2) in GPIO module
• Strict coding standard and does not affect code size and speed, through rigorous testing and verification
• Configurable
• Provide blank template to make port more easily

Why do we use CoX ?

• CoX Peripheral is not only a common interface for drivers, but also a full peripheral library.
• CoX function interface unify the definition of the access functions of MCU's common peripherals, which makes you port programs among different MCUs more conveniently.
• CoX has a set of specific realization for each MCU, and its code size and speed are nearly the same as the library that the suppliers provided.

When should we use CoX ?

• If users may change MCU in the future and do not want to do too much unnecessary port work.
• If users plan to use the existing drivers based on CoX interface.

The process of CoX evolution ?

CoX V1.0.0 was first released in September 2010, and has been ported to several MCU platforms, such as LPC11xx, NUC1xx and so on.

CoX V1.0.0 also provides a group of common functions for peripherals, but it has some drawbacks:

• Do not support interrupt.
• Does not have full functions. It just implements some of the most common functions, and can't play the advantages of the special MCUs.
• Does not support all the peripherals, users need to rely on the cooperation of other libraries. That will also leads to larger code size, and may have some conflicts for logic implementation.

So we re-write the CoX. We have prepared for about one year for the new CoX, each of whose interface was defined after having read and compared a number of chip manufacturers'manuals. The current version of CoX has solved all the problems above, and added some innovative things. Now the CoX peripheral library can meet different needs, such as reusable driver, specified application and so on.

How to use CoX?

CoX is a group of APIs and Macros who have the prefix x. such as xGPIOPinRead(), etc.
Click here to see more about how to use CoX: How to.

CoX Peripheral Interfaces List and Roadmap

Interface	Description	State	Date
Start-up Code	CoX startup code		09/2011
LowLayer	CoX lowlyaer support, such as type define, register define, debug assert and so on.		09/2011
xCORE	Cortex-M0/M3 Core Peripheral Interface		09/2011
SysCtl	System Control(CG & PMC) Peripheral Interface		09/2011
DMA	DMA Peripheral Interface		09/2011
GPIO	GPIO & AFIO Peripheral Interface		09/2011
UART	UART Peripheral Interface		09/2011
SPI	SPI(SSI) Peripheral Interface		09/2011
I2C	I2C Peripheral Interface		09/2011
TIMER	Timer Peripheral Interface		09/2011
PWM	PWM Peripheral Interface		09/2011
RTC	RTC Peripheral Interface		09/2011
WDT	Watchdog Timer Peripheral Interface		09/2011
ADC	ADC Peripheral Interface		09/2011
ACMP	Analog Comparator Peripheral Interface		09/2011
I2S	Inter-Integrated Circuit Sound(I2S) Peripheral Interface		12/2011
CAN	CAN Bus Peripheral Interface		12/2011
USB	USB Device/Host/OTG Peripheral Interface		12/2011
EBI	EBI bus Peripheral Interface		12/2011

CoX Support MCU List and Roadmap

Manufacturer	Series	State	Date	Download
CooCox	CoX Port Template		09/2011	Download
Nuvoton	NUC1xx		09/2011	Download
	NUC122		11/2011	NA
	M051		12/2011	NA
NXP	LPC11c1x		2012	NA
	LPC11xx		12/2011	NA
	LPC12xx		2012	NA
	LPC13xx		2012	NA
	LPC17xx		2012	NA
ST	STM32F10x		12/2011	NA
TI	Stellaris		12/2011	NA

If you hope other MCUs can be supported by CoX as soon as possible, you can develop them by yourself with our guide, contact us please!